Maulabar Like the seriesthe newer CMOS versions of the series are also usable as analogue amplifiers using negative feedback similar to operational amplifiers with only an inverting input oc citation needed ]. The and series were used in many popular minicomputers in the s and early s. A short-lived 64 prefix on Texas Instruments parts indicated an industrial temperature range; this prefix had been dropped from the TI literature by Intypical quantity-one pricing for the SN military grade, in ceramic welded flat-pack was around 22 USD. Fatasheet quad NAND gate was the first product in the series, introduced by Texas Instruments in a military grade metal flat package W in October There are many reasons of using 74LS00 in electronic circuits.
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Here are few cases where 74LS04 is used. The chip is basically used where a logic inverter is needed. Inverter Gates in this chip provide output which is negated logic input. The chip has six gates which do NOT operation.
When you want TTL outputs. The gates in this chip provide TTL logic outputs which are a must in some applications. The internal connection of gates can be given as below. Now let us take a single gate of the six and connect it as shown in circuit diagram. As shown in diagram, we have a transistor forming a NOT gate. Input here is 1A which is connected to button. Output 1Y is connected to LED through a resistor. The LED is connected to know the output status. In the circuit, When button is not pressed: Current through base of transistor will be zero.
Because base current is zero the transistor will be in OFF state. Under OFF sate the total supply voltage appears across the transistor. Under such case the output 1Y here will be HIGH, since output is nothing but voltage across transistor. When button is pressed: Voltage appears at base of transistor and current flows through it. Because base current is present the transistor will turn ON.
Under ON sate the total supply voltage appears across the resistor and voltage across transistor will be zero. Under such case the output 1Y here will also be LOW, since output is nothing but voltage across transistor.
If we draw truth table based on above cases, we will have. Input 1A.
74LS00 Datasheet – Quad 2 Input NAND Gate
Kataur Under normal circumstances both buttons are not pressed and are open. With that the entire supply voltage appears across the transistor which is in OFF state. The part numbers for series logic devices often dataxheet the following designators:. After verifying the cases, you can tell that we have satisfied the above truth table.
IC 74LS00 DATASHEET PDF
PDF 74LS00 Datasheet ( Hoja de datos )